Armrest



FIG. 1 is a top, front and right perspective view of an armrest showing my new design;

FIG. 2 is a top plan view thereof;

FIG. 3 is a bottom plan bottom plan view thereof;

FIG. 4 is a front elevational view thereof, a rear elevational view being a mirror image; and,

FIG. 5 is a right side view thereof, a left side view being a mirror image. 

The ornamental design for an armrest, as shown and described. 